Toyota and General Motors will recall 844,277 cars in the United States to replace potentially faulty passenger side airbag inflators, the NHTSA said.

The vehicles are 2002-2004 Lexus SC, 2003-2004 Pontiac Vibe (a Corolla spin-off produced for the now defunct GM division), 2003-2004 Toyota Corolla, 2003-2004 Corolla Matrix (Toyota's version of the Vibe), 2002-2004 Sequoia and 2003-2004 Tundra.

NHTSA said the cars have a passenger side frontal air bag inflator which may produce excessive internal pressure causing the inflator to rupture upon deployment of the air bag, with metal fragments striking and potentially seriously injuring the passenger seat occupant or other occupants.

The recall is for both the passenger side frontal air bags that were originally installed in the vehicles, as well as replacements that may have been installed following a crash.

Toyota and GM have yet to announce recall schedules, NHTSA said.

The recall supersedes an earlier one in which some vehicles were inspected and received a replacement inflator, while others were inspected but did not have their inflator replaced.

"All owners of vehicles that did not get an inflator replacement, or owners that do not know if they got an inflator replacement, should contact [their dealers]," NHTSA advised.